A cable for charging an electric vehicle

Abstract

The utility model provides a kind of cable for electric vehicle charging, it is related to automobile charging cable technical field, and it include: automobile charging cable ontology, the trapezoidal polycarbonate protective strip is bonded on the outer surface of automobile charging cable ontology, the charging wire core and control wire core outside are wrapped with Teflon wrapping layer, the Teflon wrapping layer outside is wrapped with tinned copper braid screen shield, the tinned copper braid screen shield outside surface is wrapped with carbon fiber reinforcement layer, the carbon fiber reinforcement layer outside is extruded with polypropylene fiber inner sheath, the polypropylene fiber inner sheath outside is wrapped with aramid braid layer by support rib, the aramid braid layer outside is extruded with nano alumina rubber outer sheath, the support rib side is filled with heat-conducting potting adhesive.The utility model solves the problem that EVA surface layer of charging cable outer sheath in the prior art is exposed to sunlight or climate and is prone to aging, protection duration is not good and affects normal heat dissipation of charging cable.

Description

Technical Field

[0001] This utility model relates to the field of automotive charging cable technology, specifically to a cable for charging electric vehicles. Background Technology

[0002] Electric vehicle charging cables are used in electric vehicle charging equipment and charging ports, or in vehicle charging and discharging early warning control systems with control signal transmission functions such as charging saturation and safety warnings. Typically, the grounding wire, power wire, and control wire are twisted together into a single cable. A search revealed existing technology (announcement number: CN202420724790.7) for bending-resistant and deformation-resistant electric vehicle charging cables, which describes "adding an EVA wear-resistant protective layer to the outside of the polyurethane elastomer outer sheath to effectively prevent wear and cracking of the sheath layer, extend service life, and ensure durable application." However, existing technology presents problems with the EVA surface layer of the charging cable's outer sheath being prone to aging when exposed to sunlight or climate, having poor protection duration, and affecting the normal heat dissipation of the charging cable. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a charging cable for electric vehicles is provided to solve the problems of easy aging of the EVA surface layer of the outer sheath of the charging cable when exposed to sunlight or climate, poor protection time, and impaired heat dissipation of the charging cable.

[0004] To achieve the above objectives, a charging cable for electric vehicles is provided, comprising: a charging cable body, wherein the charging cable body contains a charging core and a control core. The outer surface of the automotive charging cable is bonded with a trapezoidal polycarbonate sheath. The charging core and control core are wrapped with a Teflon wrapping layer. The Teflon wrapping layer is wrapped with a tinned copper braided mesh shielding layer. The outer side of the tinned copper braided mesh shielding layer is wrapped with a carbon fiber reinforcement layer. A polypropylene fiber inner sheath is extruded on the outer side of the carbon fiber reinforcement layer. An aramid braided mesh layer is wrapped on the outer side of the polypropylene fiber inner sheath through supporting ribs. A nano-alumina rubber outer sheath is extruded on the outer side of the aramid braided mesh layer. The sides of the supporting ribs are filled with thermally conductive potting compound.

[0005] Furthermore, the trapezoidal polycarbonate strips are circumferentially distributed on the surface of the nano-alumina rubber outer sheath of the automotive charging cable body.

[0006] Furthermore, both the charging core and the control core have an insulating layer on their outer surfaces.

[0007] Furthermore, the outer end face of the polypropylene fiber inner sheath is provided with supporting ribs at equal intervals.

[0008] Furthermore, the spacing between the polypropylene fiber inner sheath and the aramid woven mesh layers is filled with thermally conductive potting compound and supporting ribs.

[0009] Furthermore, the thickness of the carbon fiber reinforcing layer is 0.1-0.15 mm.

[0010] Furthermore, the thickness of the aramid woven mesh layer is 0.02-0.1 mm.

[0011] The beneficial effects of this utility model are as follows: the electric vehicle charging cable of this utility model utilizes a nano-alumina rubber outer sheath, an aramid braided mesh layer, a thermally conductive potting compound, and a polypropylene fiber inner sheath to form a highly wear-resistant double-sheath structure. The excellent wear resistance, fatigue resistance, and tensile strength of the nano-alumina rubber outer sheath and the aramid braided mesh layer themselves help to reduce wear and aging of the cable's outer sheath, while simultaneously enhancing the overall compressive strength of the cable, ensuring heat dissipation during operation, and improving the service life of the electric vehicle charging cable. Furthermore, the trapezoidal polycarbonate strip bonded to the outer surface of the cable further protects against external mechanical impacts and delays damage to the outer sheath. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an electric vehicle charging cable according to an embodiment of the present invention.

[0013] Figure 2 This is a schematic diagram of the outer structure of an electric vehicle charging cable according to an embodiment of the present invention.

[0014] Figure 3 This is a schematic diagram of the outer partial structure of the electric vehicle charging cable according to an embodiment of the present invention.

[0015] Figure 4 This is a three-dimensional structural diagram of the trapezoidal polycarbonate protective strip according to an embodiment of the present invention.

[0016] In the diagram: 1. Car charging cable body; 11. Teflon wrapping layer; 2. Charging core; 21. Control core; 22. Insulation layer; 3. Trapezoidal polycarbonate sheath; 4. Nano-alumina rubber outer sheath; 5. Polypropylene fiber inner sheath; 51. Support ribs; 6. Thermally conductive potting compound; 7. Carbon fiber reinforcement layer; 8. Tinned copper braided mesh shielding layer; 9. Aramid braided mesh layer. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 1 to 4 As shown, this utility model provides a charging cable for electric vehicles, including: a charging cable body 1, wherein a charging core 2 and a control core 21 are disposed inside the charging cable body 1. The outer surface of the car charging cable body 1 is bonded with a trapezoidal polycarbonate protective strip 3. The charging core 2 and the control core 21 are wrapped with a Teflon wrapping layer 11. The Teflon wrapping layer 11 is wrapped with a tinned copper braided mesh shielding layer 8. The outer side of the tinned copper braided mesh shielding layer 8 is wrapped with a carbon fiber reinforcement layer 7. The outer side of the carbon fiber reinforcement layer 7 is extruded with a polypropylene fiber inner sheath 5. The outer side of the polypropylene fiber inner sheath 5 is wrapped with an aramid braided mesh layer 9 through a support rib 51. The outer side of the aramid braided mesh layer 9 is extruded with a nano-alumina rubber outer sheath 4. The sides of the support rib 51 are filled with thermally conductive potting compound 6.

[0019] The automotive charging cable body 1 forms a highly wear-resistant double-sheath structure consisting of a nano-alumina rubber outer sheath 4, an aramid braided mesh layer 9, a thermally conductive potting compound 6, and a polypropylene fiber inner sheath 4. The excellent wear resistance, fatigue resistance, and tensile strength of the nano-alumina rubber outer sheath 4 and the aramid braided mesh layer 9 help reduce wear and aging of the cable's outer sheath, while also enhancing the overall compressive strength of the cable, ensuring proper heat dissipation during operation, and extending the cable's service life. A trapezoidal polycarbonate strip 3 is bonded to the outer surface of the automotive charging cable body 1 to further protect against external mechanical impacts and delay damage to the outer sheath.

[0020] In this embodiment, trapezoidal polycarbonate sheaths 3 are circumferentially distributed on the surface of the nano-alumina rubber outer sheath 4 of the automotive charging cable body 1. Supporting ribs 51 are equidistantly arranged on the outer end face of the polypropylene fiber inner sheath 5. Thermally conductive potting compound 6 and supporting ribs 51 are used to fill the gap between the polypropylene fiber inner sheath 5 and the aramid braided mesh layer 9. The carbon fiber reinforcing layer 7 has a thickness of 0.1-0.15 mm. The aramid braided mesh layer 9 has a thickness of 0.02-0.1 mm.

[0021] As a preferred implementation, the trapezoidal polycarbonate sheath 3 possesses high strength, wear resistance, and chemical resistance, further protecting and resisting external mechanical impacts on the automotive charging cable body 1, and delaying damage to the nano-alumina rubber outer sheath 4 of the automotive charging cable body 1. The nano-alumina in the nano-alumina rubber outer sheath 4 can form an effective protective layer within the rubber, preventing oxidation and aging, thereby effectively extending the lifespan of the nano-alumina rubber outer sheath 4, while also increasing wear resistance and heat resistance, facilitating the reduction of wear and aging on the surface of the automotive charging cable. The polypropylene fiber inner sheath 5 and the nano-alumina rubber outer sheath 4 form a double-sheath structure, improving the torsional and abrasion resistance of the automotive charging cable body 1. The carbon fiber reinforcing layer 7 and the aramid braided mesh layer 9 enhance the compressive strength and impact resistance of the automotive charging cable body 1, preventing deformation and damage under pressure. The thermally conductive potting compound 6 effectively prevents moisture and humidity from entering the interior of the automotive charging cable body 1, protecting it from damage in a humid environment and ensuring its stability and safety.

[0022] In this embodiment, an insulating layer 22 is provided on the outer surface of both the charging core 2 and the control core 21.

[0023] In a preferred implementation, charging core 2 transmits current, thus serving a charging function. Control core 21 transmits control signals, enabling functions such as start / stop control and fault alarm for the charging station. The vehicle charging cable body 1 contains a grounding wire to ensure normal charging of the electric vehicle.

[0024] The electric vehicle charging cable of this invention can effectively solve the problems of easy aging of the EVA surface layer of the charging cable outer sheath when exposed to sunlight or climate, poor protection time, and affect the normal heat dissipation of the charging cable in the prior art. It can reduce the wear and aging of the outer sheath of the car charging cable, while enhancing the overall compressive strength of the car charging cable, ensuring the heat dissipation of the car charging cable during operation, and improving the service life of the electric vehicle charging cable. It is suitable for electric vehicle charging cables.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A charging cable for electric vehicles, comprising: The car charging cable body (1) is provided with a charging core (2) and a control core (21) inside, characterized in that: The outer surface of the car charging cable body (1) is bonded with a trapezoidal polycarbonate sheath (3). The charging core (2) and control core (21) are wrapped with a Teflon wrapping layer (11). The Teflon wrapping layer (11) is wrapped with a tin-plated copper braided mesh shielding layer (8). The outer side of the tin-plated copper braided mesh shielding layer (8) is wrapped with a carbon fiber reinforcing layer (7). The carbon fiber reinforcing layer (7) is extruded with a polypropylene fiber inner sheath (5). The polypropylene fiber inner sheath (5) is wrapped with an aramid braided mesh layer (9) through a support rib (51). The aramid braided mesh layer (9) is extruded with a nano-alumina rubber outer sheath (4). The side of the support rib (51) is filled with thermally conductive potting compound (6).

2. The electric vehicle charging cable according to claim 1, characterized in that, The trapezoidal polycarbonate strip (3) is distributed in a circle on the surface of the nano-alumina rubber outer sheath (4) of the car charging cable body (1).

3. The electric vehicle charging cable according to claim 1, characterized in that, The outer surfaces of the charging core (2) and the control core (21) are provided with an insulating layer (22).

4. The electric vehicle charging cable according to claim 1, characterized in that, The polypropylene fiber inner sheath (5) has support ribs (51) equidistantly arranged on the outer end face.

5. The electric vehicle charging cable according to claim 1, characterized in that, The gap between the polypropylene fiber inner sheath (5) and the aramid woven mesh layer (9) is filled with thermally conductive potting compound (6) and supporting ribs (51).

6. The electric vehicle charging cable according to claim 1, characterized in that, The thickness of the carbon fiber reinforcing layer (7) is 0.1-0.15 mm.

7. The electric vehicle charging cable according to claim 1, characterized in that, The thickness of the aramid woven mesh layer (9) is 0.02-0.1 mm.

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